Participants in this study will be receiving biochemotherapy treatment as part of their routine care. This treatment will include 3 chemotherapy drugs (cisplatin, vinblastine, and DTIC) and 2 drugs that stimulate the immune system (interferon and interleukin-2 (IL-2)). Biochemotherapy often causes nausea, vomiting, loss of appetite, and weight loss. Palonosetron will be given on this study to try to treat the side effects of biochemotherapy.